The science fiction trilogy referred to the three classic science fiction series created by Liu Cixin: The Three-Body Problem, Dark Forest, and Death Forever. The " Three-Body " series described the communication, interaction, and conflict between humans and alien civilizations, as well as the crisis and challenges humans faced in the face of alien invasion. The series, which included " The Three-Body Problem,"" Dark Forest," and " Death Forever," was hailed as one of the representative works of Chinese science fiction literature. Dark Forest told the story of human beings exploring the universe to resist alien invasion. It revealed the law of the dark forest in the universe and the mutual threat and interest relationship between alien civilizations. " Reaper's Eternal Life " was about how humans finally found a solution to the crisis of alien invasion and the destruction of the universe and achieved peace and eternal life. These three works not only won a wide range of readers and praise in China but also around the world, becoming classics in science fiction.